Re: From a view rect to a screen rect
Re: From a view rect to a screen rect
- Subject: Re: From a view rect to a screen rect
- From: Lee Ann Rucker <email@hidden>
- Date: Fri, 01 Jul 2011 13:52:54 -0700
On Jul 1, 2011, at 1:14 PM, Andy Lee wrote:
> On Jul 1, 2011, at 2:43 PM, Development wrote:
>> I have tried having the view itself use convertRectToBase passing the screen bounds.
>
> That method doesn't do what you think it does. The docs say pretty clearly you should pass it a rect "in the receiver’s coordinate system". This is a method of NSView, so the receiver is the view, and question is what is the rect being converted to?
>
> I *partly* blame the docs and/or the method name, because it isn't clear what "base" means in the method name. This has always bugged me. As far as I can tell it means the window's coordinate system, so I don't know why they didn't name the method "convertRectToWindow:".
http://groups.google.com/a/chromium.org/group/chromium-dev/browse_thread/thread/6b989dcbb79e9ba/029eeb633c5287cc
Quote:
If you want to convert to/from the window's base coordinate system, use the
original -convert[xx]:[to|from]View: and pass in a nil view.
What those "base" calls do is a conversion to the "base" coordinate system
which isn't the "window base" coordinate system. This will not get you the
coordinates you want. Don't use them. (The "base" coordinate system has to
do with resolution independence; go look it up.)
>
> Anyway, check out NSView's window method, and NSWindow's convertBaseToScreen: method. See the docs for what these methods return.
>
> --Andy
>
>
>> This creates a rectangle of the correct size but the origin is always, no matter what, 15,183.
>> I'm totally lost here and don't even know what to search for now that my other attempts have failed.
>> Could some one help me out?
>> I'm hoping to find something with low overhead as clicks are a factor._______________________________________________
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